EP0034278A2 - Method and apparatus for the electrostatic coating of articles by means of a fluid - Google Patents

Method and apparatus for the electrostatic coating of articles by means of a fluid Download PDF

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Publication number
EP0034278A2
EP0034278A2 EP81100609A EP81100609A EP0034278A2 EP 0034278 A2 EP0034278 A2 EP 0034278A2 EP 81100609 A EP81100609 A EP 81100609A EP 81100609 A EP81100609 A EP 81100609A EP 0034278 A2 EP0034278 A2 EP 0034278A2
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EP
European Patent Office
Prior art keywords
fluid
bell
spray
spray bell
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81100609A
Other languages
German (de)
French (fr)
Other versions
EP0034278B1 (en
EP0034278A3 (en
Inventor
Roland Andreas Dipl.-Ing. Meisner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Farben und Fasern AG
Original Assignee
BASF Farben und Fasern AG
BASF Lacke und Farben AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BASF Farben und Fasern AG, BASF Lacke und Farben AG filed Critical BASF Farben und Fasern AG
Priority to AT81100609T priority Critical patent/ATE9203T1/en
Publication of EP0034278A2 publication Critical patent/EP0034278A2/en
Publication of EP0034278A3 publication Critical patent/EP0034278A3/en
Application granted granted Critical
Publication of EP0034278B1 publication Critical patent/EP0034278B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1064—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces the liquid or other fluent material to be sprayed being axially supplied to the rotating member through a hollow rotating shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0403—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces characterised by the rotating member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
    • B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
    • B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
    • B05B5/0415—Driving means; Parts thereof, e.g. turbine, shaft, bearings

Definitions

  • the invention relates to a method for electrostatically coating objects with a fluid, e.g. liquid paint, by applying a high voltage to a spray bell and supplying the fluid to the rotating spray bell.
  • a fluid e.g. liquid paint
  • Spray systems are also known in which the paint is electrostatically drawn off as a thin film from a knife-like edge.
  • the paint is fed to the spray edge by gravity or centrifugal force.
  • the invention has for its object to provide a method with which a fluid, for example liquid paint, can be sprayed onto an object to be processed, in contrast to the previously known devices also difficult coating materials, such as "metallic paints", can be processed and a uniform fine distribution of the color is guaranteed without fear of the presence of air pockets.
  • a fluid for example liquid paint
  • metallic paints difficult coating materials
  • Another object of the invention is to provide a simple, handy and reliable device for performing the method.
  • the underlying the invention object is achieved in that the conveying speed of the fed to the center of the spray bell fluid is decelerated when entering into the bell to nearly zero, then the speed is increased by the fact that by the bell on 15ooo to 6 0th Accelerated 000 RPM and then thrown off the spray edge of the bell and fed to the object to be coated.
  • the device for carrying out the method according to the invention is characterized in that a diffuser is provided in the feed line for the fluid in the region of the line end.
  • the inventive method is thus worked so that the one with a speed of preferably 15.ooo to 6 0th 000 RPM rotating bell centrally supplied fluid flow through the toroidal vortex forming in the free half space without detachment of the moving bell inner surface and is supplied there in a manner known per se via frictional engagement or positive engagement of the spray edge.
  • the fluid flow is almost decelerated to zero speed by means of a diffuser and a rectifier screen.
  • the position of the swirl axis is not subject to any restrictions in wide operating areas.
  • a particularly expedient device for carrying out the method according to the invention consists in a bell which is seated on a hollow axis and is driven by an external rotor drive.
  • the hollow axis itself serves as a lacquer channel, which widens like a diffuser at the transition point to the inside of the bell, before the fluid then passes through a rectifier sieve at its end.
  • the impressed forces of the torus vortex then make the fluid of the moving inner surface of the bell, which is grooved for positive transport, radial and rotationally symmetrical to hand over.
  • nozzle bores are provided on one or more partial circles, one of which is preferably larger than the diameter of the atomizing edge.
  • the pitch circle diameter and the bore geometry are selected in relation to the air throughput so that the air balance around the rotating bell is ensured and the sprayed paint mist cone receives a defined axial thrust through the circular air curtain.
  • Fig. 1 has the hollow shaft 1, 1o and 1 0 'of the bell 2 with the rotor 5, the stator 11 and the dynamic seal 2o and the fabric sleeve 16 carries the bearings.
  • the elec trical lead 8 for the stator is guided in a groove 17 on the hollow shaft through the bearing 1 0 '.
  • the hollow shaft ends in a diffuser 12, which is closed by a rectifying screen 14.
  • the inlet of the diffuser is designed as a valve seat 3, on which the fluid flow can be shut off using the valve needle 4.
  • the bell inner contour carries a radial toothing 15 for the transmission of the Coriolis force.
  • the nozzle bores 9 of the nozzle ring 6 generate an annular air curtain which imparts an axial thrust to the paint mist sprayed on the edge 13.
  • the paint to be sprayed is introduced via line 7.

Abstract

Process for electrostatically coating objects with a fluid, for instance liquid paint, by applying a high voltage to a spray bell and by feeding the fluid to a revolving, driven spray bell. The flow-rate of the fluid supplied to the center of the spray bell is decelerated nearly to zero when it enters the bell, then the rate of the fluid is increased by being accelerated by the bell to 15,000 to 60,000 rpm, and the fluid thereupon is centrifuged off the spray rim of the bell and is guided to the object to be coated.

Description

Die Erfindung betrifft ein Verfahren zum elektrostatischen Überziehen von Gegenständen mit einem Fluid, z.B. flüssiger Farbe, durch Anlegen einer Hochspannung an eine Sprühglocke und Zuführen des Fluids zu der umlaufend angetriebenen Sprühglocke.The invention relates to a method for electrostatically coating objects with a fluid, e.g. liquid paint, by applying a high voltage to a spray bell and supplying the fluid to the rotating spray bell.

Verfahren und Vorrichtungen zum elektrostatischen Überziehen von Gegenständen mit Farbe sind in großer Zahl bekannt. So gibt es Sprühpistolen in den verschiedensten Ausführungen, bei denen das Farbgut mittels Druckluft oder Airless versprüht wird. An der Versprühungsstelle liegt eine nadelförmige Hochspannungselektrode, über die infolge der hohen Feldlinienkonzentration eine elektrische Aufladung des Spritznebels erfolgt.Methods and devices for electrostatically coating objects with paint are known in large numbers. There are spray guns in a wide variety of designs in which the paint is sprayed using compressed air or airless. At the spraying point there is a needle-shaped high-voltage electrode, via which the spray mist is electrically charged due to the high field line concentration.

Weiter sind Sprühsysteme bekannt, bei denen das Farbgut als dünner Film von einer messerartig ausgebildeten Kante elektrostatisch abgezogen wird. Dabei erfolgt die Zuführung des Farbgutes zur Sprühkante durch Schwerkraft oder Fliehkräfte.Spray systems are also known in which the paint is electrostatically drawn off as a thin film from a knife-like edge. The paint is fed to the spray edge by gravity or centrifugal force.

Schließlich ist es bekannt, daß durch hohe Zentrifugalkräfte, mit oder ohne elektrischem Feld, eine Zerstäubung erzielbar ist, die im wesentlichen die Vorteile der vorher genannten Verfahren beinhaltet. Dieses System hat jedoch den Nachteil, daß infolge der Sprühglockenkonstruktion, selbst bei zentraler Lackzuführung, das Farbgut vor dem Zerstäuben Unstetigkeitsstellen passieren muß (unstetige Querschnittsveränderung, Coriolisbeschleunigungssprung) die Veränderungen im Farbgut (z.B. durch Einschlagen von Luft) nach sich ziehen. Weiter benötigen diese Systeme eine zentrale Zerstäubernabe, um das Farbgut der Sprühkante zuzuführen. Diese Zerstäubernabe unterliegt unkontrollierbarer Verschmutzung.Finally, it is known that atomization can be achieved by high centrifugal forces, with or without an electric field, which essentially contains the advantages of the aforementioned methods. However, this system has the disadvantage that due to the construction of the spray bell, even with a central paint supply, the paint must pass through discontinuities before atomization (discontinuous change in cross-section, Coriolis acceleration jump), which leads to changes in the paint (e.g. by blowing air). These systems also require a central atomizer hub to feed the paint to the spray edge. This atomizer hub is subject to uncontrollable contamination.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu schaffen, mit der ein Fluid, z.B. flüssige Farbe, auf einen zu bearbeitenden Gegenstand aufgesprüht werden kann, wobei im Unterschied zu den bisher bekannten Einrichtungen auch schwierige Uberzugs-Materialien, wie beispielsweise "Metallic-Lacke", verarbeitet werden können und eine gleichmäßige Feinverteilung der Farbe gewährleistet ist, ohne daß befürchtet werden muß, daß Lufteinschlüsse vorhanden sind. Der Wirkungsgrad soll wesentlich erhöht werden.The invention has for its object to provide a method with which a fluid, for example liquid paint, can be sprayed onto an object to be processed, in contrast to the previously known devices also difficult coating materials, such as "metallic paints", can be processed and a uniform fine distribution of the color is guaranteed without fear of the presence of air pockets. The efficiency should be increased significantly.

Eine weitere Aufgabe der Erfindung besteht darin, eine einfache, handliche und betriebssichere Vorrichtung zur Durchführung des Verfahrens zu schaffen.Another object of the invention is to provide a simple, handy and reliable device for performing the method.

Die der Erfindung zugrundeliegende Aufgabe wird dadurch gelöst, daß die Fördergeschwindigkeit des dem Zentrum der Sprühglocke zugeführten Fluids bei Eintritt in die Glocke auf nahezu Null verzögert wird, dann die Geschwindigkeit dadurch erhöht wird, daß es durch die Glocke auf 15ooo bis 60.000 UPM beschleunigt und anschließend von der Sprühkante der Glocke abgeschleudert und dem zu beschichtenden Gegenstand zugeführt wird.The underlying the invention, object is achieved in that the conveying speed of the fed to the center of the spray bell fluid is decelerated when entering into the bell to nearly zero, then the speed is increased by the fact that by the bell on 15ooo to 6 0th Accelerated 000 RPM and then thrown off the spray edge of the bell and fed to the object to be coated.

Die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens kennzeichnet sich dadurch, daß in der Zuführungsleitung für das Fluid im Bereich des Leitungsendes ein Diffusor vorgesehen ist. Weitere vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens und der erfindungsgemäßen Vorrichtung sind in den Unteransprüchen erläutert.The device for carrying out the method according to the invention is characterized in that a diffuser is provided in the feed line for the fluid in the region of the line end. Further advantageous refinements of the method according to the invention and the device according to the invention are in the sub claims explained.

Bei der erfindungsgemäßen Verfahrensweise wird also so gearbeitet, daß der, der mit einer Drehzahl von vorzugsweise 15.ooo bis 60.000 UPM rotierenden Glocke zentral zugeführte Fluidstrom durch den sich im freien Halbraum ausbildenden Toruswirbel ohne Ablösung der bewegten Glockeninnenfläche zugeführt wird und dort in an sich bekannter Weise über Reibschluß bzw. Formschluß der Sprühkante zugeführt wird. Hierbei wird der Fluidstrom mittels eines Diffusors und eines Gleichrichtersiebes nahezu auf die Geschwindigkeit Null abgebremst. Die Lage der Drallachse unterliegt dabei in weiten Betriebsbereichen keinen Einschränkungen.In the inventive method is thus worked so that the one with a speed of preferably 15.ooo to 6 0th 000 RPM rotating bell centrally supplied fluid flow through the toroidal vortex forming in the free half space without detachment of the moving bell inner surface and is supplied there in a manner known per se via frictional engagement or positive engagement of the spray edge. The fluid flow is almost decelerated to zero speed by means of a diffuser and a rectifier screen. The position of the swirl axis is not subject to any restrictions in wide operating areas.

Eine besonders zweckmäßige Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens besteht in einer auf einer Hohlachse sitzenden Glocke, die durch einen Außenläuferantrieb angetrieben wird. Die Hohlachse selbst dient dabei als Lackkanal, der sich an der Ubergangsstelle zur Glockeninnenseite diffusorartig erweitert, bevor das Fluid dann an dessen Ende ein Gleichrichtersieb passiert. Radial und rotationssymmetrisch wird dann durch die aufgeprägten Kräfte des Toruswirbels das Fluid der bewegten, zum formschlüssigen Transport gerillten Glockeninnenfläche übergeben. Nach rückwärts versetzt sind Düsenbohrungen auf einem oder mehreren Teilkreisen angebracht, von denen einer vorzugsweise größer ist als der Durchmesser der Zerstäubungskante. Der Teilkreisdurchmesser und die Bohrungsgeometrie werden in Relation zum Luftdurchsatz so gewählt, daß einmal der Lufthaushalt um die rotierende Glocke sichergestellt wird und zum zweiten der abgesprühte Lacknebelkegel durch den kreisringförmigen Luftschleier einen definierten Axialschub erhält.A particularly expedient device for carrying out the method according to the invention consists in a bell which is seated on a hollow axis and is driven by an external rotor drive. The hollow axis itself serves as a lacquer channel, which widens like a diffuser at the transition point to the inside of the bell, before the fluid then passes through a rectifier sieve at its end. The impressed forces of the torus vortex then make the fluid of the moving inner surface of the bell, which is grooved for positive transport, radial and rotationally symmetrical to hand over. Offset to the rear, nozzle bores are provided on one or more partial circles, one of which is preferably larger than the diameter of the atomizing edge. The pitch circle diameter and the bore geometry are selected in relation to the air throughput so that the air balance around the rotating bell is ensured and the sprayed paint mist cone receives a defined axial thrust through the circular air curtain.

Ein Ausführungsbeispiel für die erfindungsgemäße Vorrichtung wird nachfolgend anhand der Zeichnung erläutert. Die Zeichnung zeigt dabei in

  • Fig. 1 einen Schnitt durch eine erste Ausführungsform mit elektrischem Antrieb und in
  • Fig. 2 einen Schnitt durch eine abgeänderte Ausführungsform mit pneumatischem Antrieb.
An embodiment of the device according to the invention is explained below with reference to the drawing. The drawing shows in
  • Fig. 1 shows a section through a first embodiment with an electric drive and in
  • Fig. 2 shows a section through a modified embodiment with a pneumatic drive.

Die Ausführungsform der Fig. 1 weist die Hohlwelle 1 auf, welche die Lagerungen 1o und 10' der Glocke 2 mit dem Rotor 5, dem Stator 11 sowie die dynamische Dichtung 2o und die Stoffbuchse 16 trägt. Die elektrische Zuleitung 8 für den Stator wird in einer Nut 17 auf der Hohlwelle durch das Lager 10' geführt. Die Hohlwelle endet in einem Diffusor 12, der durch ein Gleichrichtsieb 14 abgeschlossen ist. Der Einlauf des Diffusors ist als Ventilsitz 3 ausgebildet, an dem der Fluidstrom mit Hilfe der Ventilnadel 4 abgesperrt werden kann. Die Glockeninnenkontur trägt zur Übertragung der Corioliskraft eine Radialverzahnung 15. Die Düsenbohrungen 9 des Düsenkranzes 6 erzeugen einen kreisringförmigen Luftschleier, der den an der Kante 13 versprühten Lacknebel einen Axialschub aufprägt. Die Einführung des zu versprühenden Lackes erfolgt über die Leitung 7.The embodiment of Fig. 1 has the hollow shaft 1, 1o and 1 0 'of the bell 2 with the rotor 5, the stator 11 and the dynamic seal 2o and the fabric sleeve 16 carries the bearings. The elec trical lead 8 for the stator is guided in a groove 17 on the hollow shaft through the bearing 1 0 '. The hollow shaft ends in a diffuser 12, which is closed by a rectifying screen 14. The inlet of the diffuser is designed as a valve seat 3, on which the fluid flow can be shut off using the valve needle 4. The bell inner contour carries a radial toothing 15 for the transmission of the Coriolis force. The nozzle bores 9 of the nozzle ring 6 generate an annular air curtain which imparts an axial thrust to the paint mist sprayed on the edge 13. The paint to be sprayed is introduced via line 7.

Bei der in Fig. 2 dargestellten Ausführungsform ist anstelle des elektrischen Antriebes ein pneumatischer Antrieb mit Turbinenrotor 18 und Düsenring 19 vorgesehen. Ansonsten stimmt diese Ausführungsform in ihrer Wirkungsweise mit der gemäß Fig. 1 überein.In the embodiment shown in FIG. 2, a pneumatic drive with a turbine rotor 18 and nozzle ring 19 is provided instead of the electric drive. Otherwise, this embodiment corresponds in its mode of operation with that according to FIG. 1.

Claims (11)

1. Verfahren zum elektrostatischen Überziehen von Gegenständen mit einem Fluid, z.B. flüssiger Farbe, durch Anlegen einer Hochspannung an eine Sprühglocke und Zuführen des Fluids zu der umlaufend angetriebenen Sprühglocke, dadurch gekennzeichnet, daß die Fördergeschwindigkeit des dem Zentrum der Sprühglocke zugeführten Fluids bei Eintritt in die Glocke auf nahezu Null verzögert, dann die Geschwindigkeit dadurch erhöht wird, daß es durch die Glocke auf 15000 bis 60000 UPM beschleunigt und anschließend von der Sprühkante der Glocke abgeschleudert und dem zu beschichtenden Gegenstand zugeführt wird.1. A method for the electrostatic coating of objects with a fluid, for example liquid paint, by applying a high voltage to a spray bell and supplying the fluid to the rotating driven spray bell, characterized in that the conveying speed of the fluid supplied to the center of the spray bell when entering the bell decelerated to nearly zero, then the speed is increased by the fact that it accelerates through the bell to 15000-6 0000 rpm and then spun off from the spray edge of the bell and the supplied object to be coated. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Energieübertragung auf den Toruswirbel und den Fluidfilm formschlüssig erfolgt.2. The method according to claim 1, characterized in that the energy transfer to the torus and the fluid film is positive. 3. Verfahren nach Anspruch 1 und 2, dadurch Qekennzeichnet, daß nach Abschleudern der Fluidteilchen vom Sprühglockenrand (13) den Fluidteilchen durch mindestens eine Gasbeaufschlagung ein Axialschub erteilt wird.3. The method according to claim 1 and 2, characterized Q ek indicates that after centrifuging the fluid particles from the edge of the spray bell (13) Fluid particles are given an axial thrust by at least one gas application. 4. Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der durch den Toruswirbel der Sprühglocke rückgeführte Sprühnebel erst auf einen geschlossenen Fluidfilm auftrifft, von diesem aufgenommen wird und dann mit diesem beschleunigt wird.4. The method according to claim 1 to 3, characterized in that the spray mist returned by the torus vortex of the spray bell only hits a closed fluid film, is absorbed by this and is then accelerated with it. 5. Vorrichtung zum Durchführen des Verfahrens nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß in der Zuführleitung (7) für das Fluid im Bereich des Leitungsendes ein Diffusor (12) vorgesehen ist.5. A device for performing the method according to claim 1 to 4, characterized in that a diffuser (12) is provided in the feed line (7) for the fluid in the region of the line end. 6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß im Strömungsweg des Fluids in Strömungsrichtung gesehen auf den Diffusor (12) ein Gleichrichtsieb (14) folgt.6. The device according to claim 5, characterized in that in the flow path of the fluid seen in the flow direction on the diffuser (12) follows a rectifying sieve (14). 7. Vorrichtung wenigstens nach Anspruch 5, dadurch gekennzeichnet, daß die Innenseite der Sprühglocke (2) mit einer Radialverzahnung (15) versehen ist.7. The device at least according to claim 5, characterized in that the inside of the spray bell (2) is provided with a radial toothing (15). 8. Vorrichtung wenigstens nach Anspruch 5, gekennzeichnet durch mindestens einen im rückwärtigen Bereich der Sprühglocke (2) angeordneten Düsenkranz (6) zur Erzeugung eines kreisringförmigen Luftschleiers.8. The device at least according to claim 5, characterized by at least one in the rear region of the spray bell (2) arranged nozzle ring (6) for generating an annular air curtain. 9. Vorrichtung wenigstens nach Anspruch 5, dadurch gekennzeichnet, daß der Motor- und Lagerraum durch eine dynamische Dichtung vom Fluidhalbraum getrennt ist.9. The device at least according to claim 5, characterized in that the engine and storage space is separated from the fluid half space by a dynamic seal. 10. Vorrichtung wenigstens nach Anspruch 5, dadurch gekennzeichnet, daß der Elektromotor (5, 11) an Hochspannung liegt und über einen vollisolierten Trenntransformator betrieben wird.1 0 . Device at least according to claim 5, characterized in that the electric motor (5, 11) is connected to high voltage and is operated via a fully insulated isolating transformer. 11. Vorrichtung wenigstens nach Anspruch 5, dadurch gekennzeichnet, daß die Drehzahl des Motors durch Verändern der Synchronfrequenz verändert wird.11. The device at least according to claim 5, characterized in that the speed of the motor is changed by changing the synchronous frequency.
EP81100609A 1980-02-15 1981-01-28 Method and apparatus for the electrostatic coating of articles by means of a fluid Expired EP0034278B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100609T ATE9203T1 (en) 1980-02-15 1981-01-28 METHOD AND DEVICE FOR ELECTROSTATIC COATING OF OBJECTS WITH A FLUID.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3005677A DE3005677C2 (en) 1980-02-15 1980-02-15 Method and device for the electrostatic coating of objects with liquids
DE3005677 1980-02-15

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP83102488.0 Division-Into 1981-01-28
EP83102488A Division EP0089043A3 (en) 1981-01-28 1981-01-28 Method and apparatus for coating objects electronically with fluids

Publications (3)

Publication Number Publication Date
EP0034278A2 true EP0034278A2 (en) 1981-08-26
EP0034278A3 EP0034278A3 (en) 1981-12-16
EP0034278B1 EP0034278B1 (en) 1984-09-05

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EP81100609A Expired EP0034278B1 (en) 1980-02-15 1981-01-28 Method and apparatus for the electrostatic coating of articles by means of a fluid

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US (1) US4402991A (en)
EP (1) EP0034278B1 (en)
JP (1) JPS56141870A (en)
AT (1) ATE9203T1 (en)
BR (1) BR8100890A (en)
DE (2) DE3005677C2 (en)
DK (1) DK157903C (en)
ES (1) ES8206222A1 (en)
MX (1) MX149160A (en)
ZA (1) ZA81929B (en)

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EP0245849A2 (en) * 1986-05-16 1987-11-19 Behr Industrieanlagen GmbH & Co. Sprayer for the electrostatic coating of objects

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US4733821A (en) * 1984-10-26 1988-03-29 A/S Niro Atomizer Atomizer wheel for use in a spray drying apparatus
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EP0245849A3 (en) * 1986-05-16 1988-10-26 Behr Industrieanlagen Gmbh & Co. Sprayer for the electrostatic coating of objects

Also Published As

Publication number Publication date
MX149160A (en) 1983-09-07
DK60381A (en) 1981-08-16
ATE9203T1 (en) 1984-09-15
DE3165801D1 (en) 1984-10-11
ES499449A0 (en) 1982-08-16
DE3005677A1 (en) 1981-08-20
EP0034278B1 (en) 1984-09-05
EP0034278A3 (en) 1981-12-16
DE3005677C2 (en) 1982-06-24
ZA81929B (en) 1982-03-31
JPS56141870A (en) 1981-11-05
US4402991A (en) 1983-09-06
ES8206222A1 (en) 1982-08-16
DK157903C (en) 1990-08-27
DK157903B (en) 1990-03-05
BR8100890A (en) 1981-08-25

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